8 November 2014 Analysis on the electromagnetic scattering properties of crops at multi-band
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Abstract
The vector radiative transfer (VRT) theory for active microwave remote sensing and Rayleigh-Gans approximation (GRG) are applied in the study, and an iterative algorithm is used to solve the RT equations, thus we obtain the zeroorder and first-order equation for numerical results. The Michigan Microwave Canopy Scattering (MIMICS) model is simplified to adapt to the crop model, by analyzing body-surface bistatic scattering and backscattering properties between a layer of soybean or wheat consisting of stems and leaves and different underlying soil surface at multi-band (i.e. P, L, S, X, Ku-band), we obtain microwave scattering mechanisms of crop components and the effect of underlying ground on total crop scattering. Stem and leaf are regard as a needle and a circular disk, respectively. The final results are compared with some literature data to verify our calculating method, numerical results show multi-band crop microwave scattering properties differ from scattering angle, azimuth angle and moisture of vegetation and soil, which offer the part needed information for the design of future bistatic radar systems for crop sensing applications.
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Tao Wu, Zhensen Wu, Xiaoyi Liu, "Analysis on the electromagnetic scattering properties of crops at multi-band", Proc. SPIE 9260, Land Surface Remote Sensing II, 926041 (8 November 2014); doi: 10.1117/12.2069235; https://doi.org/10.1117/12.2069235
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